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HFC Architecture In The Making                      Oleh Sniezko, Tony Werner, Doug Combs                               an...
What is this?                The first joint presentation (AT& Labs                 and AT&T Broadband – former TCI) on  ...
ACKNOWLEDGEMENT               Adel Saleh                                ABIS              ABSE         (former A-Laber)   ...
HFC IN THE MAKING                      SH                                             FN        Primary                   ...
CHALLENGES                Bandwidth Demands                  Take rate and multiple lines                  New services...
ARCHITECTURES      Tree-and-Branch              Broadcast      FN              Cascaded                                 ...
FIBER OPTICS ?         Node     2,000+HP   1,200HP   600HP   200HP   100HP         Size        HOW Deep ?        HOW     T...
Initial Mini-Fiber Node Architecture                       Mini-                             FN      HE                   ...
Initial Mini-Fiber Node Architecture                       Mini-                       FN      HE                     mFN ...
Initial Mini-Fiber Node Architecture                       Mini-                       FN      HE                     mFN ...
SIX MONTH STUDY                                          completed 3/99           Define Network Upgrade Strategy to Balan...
MULTIPLEXED FIBER PASSIVE COAXXL   6/11/99
LightWire                     TM               HUB                       MuxNode                                          ...
TM                              LightWire               HUB                       MuxNode                 TV              ...
MIGRATION               Phase 1:                  Establish A New Infrastructure                      Reduce actives and...
PLATFORM COMPARISON                   HUB        MuxNode                         mFN               B Mux/Demx     Phase   ...
AN INTEGRATED PLATFORM                                                        -- Option #1 PH                             ...
AN INTEGRATED PLATFORM                                                        -- Option #2 PH                             ...
MUXNODE PLATFORM                                           1:8                                                            ...
mFN PLATFORM                            RCV      Standard     Fiber Node                                    D             ...
ADVANTAGES                  Operation Savings                      61% reduction in active components                   ...
OPERATION SAVINGS                   Current Network:   5.5 actives/mileXL   6/11/99
OPERATION SAVINGS                   61% reduction in active components                   21+% improvement in reliability...
COST AND SAVING                                                                           Potential Saving:               ...
DELAY COMPARISON                                    1000                                    100               Average dela...
PRIORITY PROVISIONING                                                                                         Low (20)    ...
BOUNDED DELAY                                    6               Average Delay (ms)                                    5  ...
Field Trial                  Objective:                      Support planned upgrade: bandwidth expansion               ...
PROJECT SCOPE                  Design Optimization                      Maximize the number of amplifiers replaced per m...
CURRENT STATUS              Vendor Selection:              4/29/99              Trial Area Selection:          4/29/99  ...
We’ll seeXL   6/11/99
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HFC Architecture In The Making

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Joint presentation about the mFN technology and HFC architecture evolution. NCTA Cable Show, 1999

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Transcript of "HFC Architecture In The Making"

  1. 1. HFC Architecture In The Making Oleh Sniezko, Tony Werner, Doug Combs and Esteban Sandino AT&T Broadband & Internet Services Xiaolin Lu, Ted Darcie, Alan Gnauck, Sheryl Woodward Bhavesh Desai and Xiaoxin Qiu AT&T Labs Rob Mclaughlin AT&T Broadband Services EngineeringXL 6/11/99
  2. 2. What is this?  The first joint presentation (AT& Labs and AT&T Broadband – former TCI) on NCTA Cable Show 1999  The invention and evolution of the mini Fiber Node (mFN – Lightwire and later OXiom) technology  At that time an extensive field trial was going on in Salt Lake City  And why we do thisXL 6/11/99
  3. 3. ACKNOWLEDGEMENT Adel Saleh ABIS ABSE (former A-Laber) Patrick O’Hare Mark Dzuban Larry Cox Cameron Gough Tim Peters Marty Davidson Sam Barney Bill Scheffler Quasar, Inc Bogdan LomnickiXL 6/11/99
  4. 4. HFC IN THE MAKING SH FN Primary SH Hub FN SH  Segmentation  FSS  DWDM  Node Splitting  DWDM  SONET  Ring-In-Ring  BDR DOCSIS ModemXL 6/11/99
  5. 5. CHALLENGES  Bandwidth Demands  Take rate and multiple lines  New services (streaming)  User behavior (always-on, SOHO)  Operation Savings Network  Sweep Evolution  Maintenance  Powering  Performance  Reliability  QoSXL 6/11/99
  6. 6. ARCHITECTURES Tree-and-Branch  Broadcast FN  Cascaded ??? Cell-Based  Narrowcast RN  ClusteredXL 6/11/99
  7. 7. FIBER OPTICS ? Node 2,000+HP 1,200HP 600HP 200HP 100HP Size HOW Deep ? HOW To ?XL 6/11/99
  8. 8. Initial Mini-Fiber Node Architecture Mini- FN HE mFN mFN Local Signaling for MAC New Services Analog video 5 50 550 1G  Fiber to mFN For Digital Overlay  550/750 - 1000 MHz Two-Way per 50 HHPs Two-  Low-Power- Low-Power-Consumption Digital Path  Simple Protocol and TerminalsXL 6/11/99
  9. 9. Initial Mini-Fiber Node Architecture Mini- FN HE mFN mFNXL 6/11/99
  10. 10. Initial Mini-Fiber Node Architecture Mini- FN HE mFN mFNXL 6/11/99
  11. 11. SIX MONTH STUDY completed 3/99 Define Network Upgrade Strategy to Balance Near- Near-term and Long-term Needs Long-  Network Design and Cost Analysis:  600+ miles, multiple scenarios  Key Results:  Incremental cost with deep fiber penetration  Opportunities in:  Reducing power consumption for 2-way services  Reducing terminal and operation cost  Ability to support future demands  Opportunities to Improve Current System While Migrating to New InfrastructureXL 6/11/99
  12. 12. MULTIPLEXED FIBER PASSIVE COAXXL 6/11/99
  13. 13. LightWire TM HUB MuxNode mFN mFN Existing/reduced New fiber along coax branch  Passive coax between mFN and subscribers  Reduced actives, power consumption, and maintenance  MuxNode to reduce cost of deep fiber penetration  Multi-dimension Multiplexing/demultiplexingXL 6/11/99
  14. 14. TM LightWire HUB MuxNode TV New IP DTV DOCSIS New IP New IP New IP Analog & TSD Digital TV Today 10 50 550 750 1G  Increased bandwidth and flexibility for DOCSIS-based services  Simultaneously support current & future (new IP) systemsXL 6/11/99
  15. 15. MIGRATION Phase 1:  Establish A New Infrastructure  Reduce actives and system power consumption  Create more bandwidth for DOCSIS-based services  Improve reliability Phase 2:  Future Proofing  More capacity & flexibility (10-100Mbps/50-100 HHP)  Low-cost, low-power-consumption user terminals  Provisioning for future opportunitiesXL 6/11/99
  16. 16. PLATFORM COMPARISON HUB MuxNode mFN B Mux/Demx Phase / MAC 1 R RFI Data AM-VSB DTV AM- Voice 5 5 550 750 1G RF End-to-End B Phase / MAC 2 R Mux/ Demx RFI Current Services 1G 100 750 1G  MAC Demarc Digital Baseband  RF DemarcXL 6/11/99
  17. 17. AN INTEGRATED PLATFORM -- Option #1 PH SH MuxNode mFN TV XTR RCV-A D D TSD ITU-A W W XTR Today RCV-A D D Filter RCV M M ITU-A 1:8 Coupler XTRV Modem RCV-D New RCV-D DWDM C ITU-D Mux IP C RCV-D Demux Phase 2 ITU-D DWDM ITU-A: Analog ITU ITU-D: Digital ITU RCV-A: Analog RCV RCV-D: Digital RCV  Integrated Platform with Phased Development  Off-the-shelf for Phase 1 with Phase 2 provisioningXL 6/11/99
  18. 18. AN INTEGRATED PLATFORM -- Option #2 PH SH MuxNode mFN TV XTR RCV-A D D TSD ITU-A W W XTR Today RCV-A D D Filter RCV M M ITU-A 1:8 Coupler XTRV Modem RCV-D New RCV-D DWDM C ITU-D Mux IP C RCV-D Demux Phase 2 ITU-D DWDM ITU-A: Analog ITU ITU-D: Digital ITU RCV-A: Analog RCV RCV-D: Digital RCV  Integrated Platform with Phased Development  Off-the-shelf for Phase 1 with Phase 2 provisioningXL 6/11/99
  19. 19. MUXNODE PLATFORM 1:8 RCV ITU-A 1:8 XTRV ASK Dem ITU-D Mux RCV-D Demux  Multi-dimension (RF, optical, and digital) mux/demuxXL 6/11/99
  20. 20. mFN PLATFORM RCV Standard Fiber Node D D Platform XTR-A RCV-D Phase 2 FSK ASK FSK HPF HPF Add-on Mod Mod Demod HPF FPGA HPF  GaAs high-gain amplifiers for maximum mFN coverage  Phase 2: RF and MAC demarcationXL 6/11/99
  21. 21. ADVANTAGES  Operation Savings  61% reduction in active components  Reduced power consumption  Simplification of maintenance  Improved Performance  Reduced ingress noise funneling (10-48MHz operation)  Increased RF bandwidth  Improved reliability  Future Proof  Flexibility between current track and future opportunities  Improved QoS and potential terminal cost reductionXL 6/11/99
  22. 22. OPERATION SAVINGS  Current Network: 5.5 actives/mileXL 6/11/99
  23. 23. OPERATION SAVINGS  61% reduction in active components  21+% improvement in reliabilityXL 6/11/99
  24. 24. COST AND SAVING Potential Saving: 250 200  Mitigates Future Node Capital Cost/HHP Splitting 150  Customer Satisfaction 100  $11/HHP/year Operating Saving: 50  $5 - 8/HHP Sweep  $1 - 2/HHP Powering 0  $1/HHP Service call Current MFPC  $1/HHP Customer call Fiber Optics mFN Amplifier Reverse Sw eep Passive  $1/HHP Credit/churn Pow er Supply Engineering Taxes  Potential Terminal Cost  $40/HHP Incremental Cost ReductionXL 6/11/99
  25. 25. DELAY COMPARISON 1000 100 Average delay (ms) 10 mFN-NAD CM 1 0.1 mFN-NAD Cable modem 0.01 10 20 30 40 50 60 70 80 90 100 Number of active usersXL 6/11/99
  26. 26. PRIORITY PROVISIONING Low (20) Medium (10) High (20) 50 40 Utilization (%) 30 150Kbps 240Kbps 20 100Kbps 10 0 26 51 77 102 128 154 179 205 230 256 282 307 Request Packet Rate (Kbps/station) 26XL 6/11/99
  27. 27. BOUNDED DELAY 6 Average Delay (ms) 5 Low Priority (20) 4 3 Medium Priority (10) 2 1 High Priority (20) 0 100 200 300 Request Packet Rate (Kbps/station)XL 6/11/99
  28. 28. Field Trial  Objective:  Support planned upgrade: bandwidth expansion  Test technology, verify cost & operation saving  Trial Scope:  520 miles (66,619 HHP) in Salt Lake Metro  Phased development and implementation  Schedule:  Service launching: October, 1999  Data collection: January, 2000XL 6/11/99
  29. 29. PROJECT SCOPE  Design Optimization  Maximize the number of amplifiers replaced per mFN  Minimize overall network power consumption  Define design limiting factors  Investigate MDU compatibility  Equipment Development:  Technology feasibility  Cost and time to market  Implementation and Data Collection  Front-end labor cost  Baseline and new data (service call, number of failures, MTTR, etc)  Change in sweeping and certification due to the new architectureXL 6/11/99
  30. 30. CURRENT STATUS  Vendor Selection: 4/29/99  Trial Area Selection: 4/29/99  Design Guideline: 5/3/99  Project Scope Documentation: 5/7/99  First Unit Delivery: 6/16/99  Installation: 6/22/99  Service Launching 10/99  Data Collection/Proposition 1/2000XL 6/11/99
  31. 31. We’ll seeXL 6/11/99
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